US10669924B2 - Coolant pressure regulator system - Google Patents

Coolant pressure regulator system Download PDF

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Publication number
US10669924B2
US10669924B2 US16/009,488 US201816009488A US10669924B2 US 10669924 B2 US10669924 B2 US 10669924B2 US 201816009488 A US201816009488 A US 201816009488A US 10669924 B2 US10669924 B2 US 10669924B2
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United States
Prior art keywords
coolant
pressure
pressure differential
valve
differential valve
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Application number
US16/009,488
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US20190383203A1 (en
Inventor
Daniele Di Martino
Giuseppe D'Aurizio
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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Priority to US16/009,488 priority Critical patent/US10669924B2/en
Assigned to GM Global Technology Operations LLC reassignment GM Global Technology Operations LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: D'AURIZIO, GIUSEPPE, Di Martino, Daniele, TOTARO, NICOLA
Priority to DE102019112500.6A priority patent/DE102019112500B4/de
Priority to CN201910398222.6A priority patent/CN110608083B/zh
Publication of US20190383203A1 publication Critical patent/US20190383203A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P3/04—Liquid-to-air heat-exchangers combined with, or arranged on, cylinders or cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/04—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/10—Details using electrical or electromechanical means

Definitions

  • the subject disclosure relates to the art of vehicle cooling systems and, more particularly, to a coolant pressure regulator system for a vehicle.
  • Coolant systems typically include a pump that drives a flow of coolant through channels formed in an engine block and/or a cylinder head. After leaving the engine block and/or the cylinder head, the coolant flows through a radiator and passes in a heat exchange relationship with a flow of air.
  • the radiator includes a pressure relief cap that opens when the coolant reaches a predetermined pressure threshold. The pressure relief cap ensures that the coolant does not exceed a design pressure of the system.
  • the coolant may only absorb a certain amount of heat from the engine. As a temperature of the coolant rises, the amount of heat that may be absorbed is reduced.
  • Various fluids have been used as coolant. Fluids with higher boiling points are able to absorb more heat. It is desirable to maintain the coolant at temperatures far from the boiling point to increase heat exchange capabilities. Therefore, the industry would be receptive to systems that move the boiling point away from operating temperatures in a vehicle.
  • a coolant pressure regulator system in one exemplary embodiment, includes a coolant circuit, and a pressurized fluid circuit selectively fluidically connected to the coolant circuit.
  • the pressurized fluid circuit includes a pump operably to selectively raising a pressure of coolant in the coolant circuit.
  • a pressure differential valve is fluidically connected to the pressurized fluid circuit downstream of the pump, the pressure differential valve including an inlet and an outlet, wherein the pressure differential valve opens when fluid pressure at the inlet exceeds fluid pressure at the outlet.
  • a one-way valve is arranged between the pump and the pressure differential valve, the one-way valve allowing fluid flow from the pump to the pressure differential valve.
  • a surge tank is fluidically connected to the outlet of the pressure differential valve.
  • a liquid barrier valve is arranged between the surge tank and the pressure differential valve, the liquid barrier valve preventing liquid from the surge tank to the outlet of the pressure differential valve.
  • a pressure relief valve is arranged between the surge tank and the outlet of the pressure differential valve.
  • the pressure relief valve is fluidically connected to an inlet of the pump.
  • a coolant pressure sensor is operatively connected to the surge tank and the pressure differential valve.
  • the pressure differential valve comprises an electronic actuator operable to fluidically connect the pump and the surge tank based on signals from the coolant pressure sensor.
  • the surge tank includes a membrane that forms a barrier isolating coolant from the coolant circuit from the pressure differential valve.
  • the pump comprises a compressor portion of a turbine.
  • a vehicle in accordance with another exemplary embodiment, includes a body having an occupant compartment, a prime mover supported in the body, and a coolant pressure regulator system including a coolant circuit fluidically connected to the prime mover.
  • a pressurized fluid circuit is selectively fluidically connected to the coolant circuit.
  • the pressurized fluid circuit includes a pump operably to selectively raising a pressure of coolant in the coolant circuit.
  • a pressure differential valve is fluidically connected to the pressurized fluid circuit downstream of the pump, the pressure differential valve including an inlet and an outlet, wherein the pressure differential valve opens when fluid pressure at the inlet exceeds fluid pressure at the outlet.
  • a surge tank is fluidically connected to the outlet of the pressure differential valve.
  • a liquid barrier valve is arranged between the surge tank and the pressure differential valve, the liquid barrier valve preventing liquid from the surge tank to the outlet of the pressure differential valve.
  • a pressure relief valve is arranged between the surge tank and the outlet of the pressure differential valve.
  • the pressure relief valve is fluidically connected to an inlet of the pump.
  • a coolant pressure sensor is operatively connected to the surge tank and the pressure differential valve.
  • the pressure differential valve comprises an electronic actuator operable to fluidically connect the pump and the surge tank based on signals from the coolant pressure sensor.
  • the surge tank includes a membrane that forms a barrier isolating coolant from the coolant circuit from the pressure differential valve.
  • FIG. 1 depicts a vehicle including a coolant pressure regulator system, in accordance with an aspect of an exemplary embodiment
  • FIG. 2 depicts a coolant pressure regulator system, in accordance with an aspect of an exemplary embodiment
  • FIG. 3 depicts a coolant pressure regulator system, in accordance with another aspect of an exemplary embodiment
  • FIG. 4 depicts a coolant pressure regulator system, in accordance with yet another aspect of an exemplary embodiment
  • FIG. 5 depicts a coolant pressure regulator system, in accordance with still yet another aspect of an exemplary embodiment.
  • FIG. 6 depicts a coolant pressure regulator system, in accordance with yet still another aspect of an exemplary embodiment.
  • a vehicle in accordance with an exemplary embodiment, is indicted generally at 10 in FIG. 1 .
  • Vehicle 10 includes a body or chassis 12 that defines, at least in part, an occupant compartment 14 .
  • a prime mover 20 is arranged in chassis 12 .
  • Prime mover 20 may take the form of an engine or motor 24 .
  • Engine or motor 24 may take on various forms including internal combustion engines, hybrid engines, electric motors, or variations thereof.
  • Prime mover 20 is operatively connected to a transmission 28 which, in turn, is mechanically linked to a rear differential or rear drive module (RDM) 30 through a propshaft 32 .
  • RDM 30 transfers power from prime mover 20 to a first wheel 34 through a first axle 35 and to a second wheel 36 through a second axle 37 . While shown as a rear wheel drive system, it should be understood that exemplary embodiments also contemplate front wheel drive systems and four wheel drive systems.
  • Vehicle 10 includes a cooling system 40 fluidically connected to prime mover 20 .
  • Cooling system 40 includes a coolant circuit 42 that carries a flow of coolant (not shown) passing from prime mover 20 through a heat exchanging member 44 such as a radiator 46 .
  • the coolant passes from an outlet 60 of prime mover 20 through radiator 46 back into prime mover 20 via an inlet 62 .
  • a one-way valve 64 is arranged upstream of inlet 62 to prevent reverse flow.
  • the coolant may be driven by, for example, a water pump (also not shown) operatively connected to prime mover 20 .
  • vehicle 10 includes a coolant pressure regulator system 70 that is fluidically connected to a turbocharger or compressor 80 ( FIG. 2 ) and coolant circuit 42 .
  • coolant circuit 42 circulates a liquid coolant (not shown) through prime mover 20 in order to reduce operating temperatures.
  • Coolant pressure regulator system 70 selectively raises a pressure of liquid coolant flowing through prime mover 20 . By raising coolant pressure, a boiling point of the coolant increases thereby increasing an overall heat carrying capacity. In this manner, the coolant may absorb more heat from prime mover 20 during certain selected operating stages.
  • turbo 80 includes a compressor portion 82 and a turbine portion 84 .
  • Compressor portion 82 includes an inlet 88 fluidically connected to an air filter 90 and an outlet 92 that may be connected to an intake manifold 94 of prime mover 20 .
  • outlet 92 may be connected to intake manifold 94 through a water charge air cooler (WCAC) that reduces a temperature of fluid passing from compressor 82 into prime mover 20 .
  • WCAC water charge air cooler
  • coolant pressure regulator system 70 includes a pressurized fluid circuit 109 fluidically connected to outlet 92 of compressor portion 82 and coolant circuit 42 of cooling system 40 .
  • pressurized fluid circuit 109 employs a flow of pressurized fluid, typically in the form of compressed air produced by compressor 80 to selectively adjust a pressure of the liquid coolant flowing through coolant circuit 42 .
  • Pressurized fluid circuit 109 includes a first line portion 114 that extends from outlet 92 to a second line portion 116 through a one-way valve 118 .
  • Second line portion 116 fluidically connects with a pressure differential valve 120 having an inlet 122 , an outlet 124 and an ambient line 130 .
  • Inlet 122 is coupled to second line portion 116 and outlet 124 is fluidically connected to a surge tank 135 via a third line portion 137 .
  • Ambient line 130 provides ambient pressure data to pressure differential valve 120 .
  • Third line portion 137 supports a liquid barrier valve 140 that may take the form of a ball cage valve 142 .
  • Liquid barrier valve 140 prevents coolant that may be in the form of a liquid, in surge tank 135 from passing back into pressure differential valve 120 via outlet 124 .
  • surge tank 135 includes a pressure relief mechanism 144 .
  • Pressure relief mechanism is calibrated to open if pressure in surge tank 135 exceeds a preset limit.
  • Pressurizing fluid circuit 109 includes a fourth line portion 146 that fluidically connects surge tank 135 with inlet 62 of prime mover 20 . Fourth line portion 146 connects with inlet 62 downstream of one-way valve 64 .
  • coolant pressure regulation system 70 includes at least two operating modes.
  • pressurized fluid in the form of compressed air
  • the coolant is typically not at operating temperatures.
  • fluid pressure e.g., compressed air
  • Fluid pressure at outlet 124 represents a pressure of the liquid coolant.
  • pressure differential valve 120 opens allowing pressurized air to flow into surge tank 135 elevating a pressure of the coolant in coolant system 40 .
  • the coolant warms and increases in pressure.
  • pressure differential valve 120 closes allowing more air to flow from compressor portion 82 into intake manifold 94 to enhance operating efficiencies.
  • Pressure regulation system 70 may also operate in a third mode illustrated in FIG. 3 .
  • pressure regulation system 70 also includes a pressure relief valve 154 fluidically connected with third line portion 137 .
  • Pressure relief valve 137 is calibrated to open if pressure in third line portion 137 at outlet 124 is greater than pressure in second line portion 116 and first line portion 114 . In this mode, pressure regulation system 70 discharges pressure to, for example, compressor inlet 88 .
  • Pressure differential valve 160 takes the form of an electronic actuator valve 162 that is set to open and closed in response to a selected pressure signal.
  • Pressure differential valve 160 includes an inlet 163 fluidically connected with second line portion 116 and an outlet 164 fluidically connected with third line portion 137 .
  • surge tank 135 includes a coolant pressure sensor 165 operatively connected to electronic actuator valve 162 .
  • Coolant pressure sensor 165 senses coolant pressure in surge tank 135 .
  • pressure differential valve 160 changes position, e.g., open/closed, based on coolant pressure sensed in surge tank 135 .
  • pressure differential valve 160 may open if coolant pressure sensor 165 determines coolant pressure is less than a predetermined selected threshold value of compressor outlet pressure.
  • Surge tank 135 is provided with a membrane 180 .
  • Membrane 180 separates an internal volume (not separately labeled) of surge tank 135 into a liquid coolant portion 186 and a coolant pressure portion 187 .
  • compressor portion 82 may increase a pressure of coolant in coolant circuit 42 without the need for a liquid barrier valve.
  • FIG. 6 depicts a coolant pressure regulator system 187 in accordance with another aspect.
  • a separate pump 190 is fluidically connected to surge tank 135 .
  • Pump 190 may include an inlet (not separately labeled) that is connected to air filter 90 , and an outlet (also not separately labeled) connected to surge tank 135 .
  • a coolant pressure sensor 192 is provided on surge tank 135 and operable to detect a pressure of coolant in coolant circuit 42 .
  • a pump controller 194 may be connected between pump 190 and coolant pressure sensor 192 . Pump controller 194 may activate pump 190 when pressure in surge tank 135 reaches a predetermined value relative to design pressure. In this manner, pump controller 194 functions as a differential pressure valve in a manner similar to that described herein.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)
US16/009,488 2018-06-15 2018-06-15 Coolant pressure regulator system Active US10669924B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/009,488 US10669924B2 (en) 2018-06-15 2018-06-15 Coolant pressure regulator system
DE102019112500.6A DE102019112500B4 (de) 2018-06-15 2019-05-13 Kühlmitteldruckregelsystem
CN201910398222.6A CN110608083B (zh) 2018-06-15 2019-05-14 冷却剂压力调节器系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16/009,488 US10669924B2 (en) 2018-06-15 2018-06-15 Coolant pressure regulator system

Publications (2)

Publication Number Publication Date
US20190383203A1 US20190383203A1 (en) 2019-12-19
US10669924B2 true US10669924B2 (en) 2020-06-02

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CN (1) CN110608083B (zh)
DE (1) DE102019112500B4 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020112678A1 (en) * 2001-02-20 2002-08-22 Volvo Trucks North America, Inc. Engine cooling system
US8065980B2 (en) * 2007-02-09 2011-11-29 Volvo Lastvagnar Ab Coolant system
US20110308484A1 (en) * 2010-06-16 2011-12-22 Russell Peterson Method and apparatus to regulate coolant pump inlet pressure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10138083A1 (de) 2001-08-03 2003-02-27 Mtu Friedrichshafen Gmbh Kühlwasser-Kreislaufsystem für eine Brennkraftmaschine
US8397681B2 (en) 2009-09-02 2013-03-19 International Engine Intellectual Property Company, Llc Expansion tank for vehicle cooling system
DE102010048859A1 (de) * 2010-10-19 2012-05-10 Gm Global Technology Operations Llc (N.D.Ges.D. Staates Delaware) Kühlsystem für einen Verbrennungsmotor, Verbrennungsmotor und Kraftfahrzeug mit einem Verbrennungsmotor
CN103867282A (zh) * 2014-03-10 2014-06-18 中国北方发动机研究所(天津) 一种主动式增压蒸汽压力系统
RU2595311C1 (ru) * 2015-03-03 2016-08-27 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" Устройство снижения температуры наддувочного воздуха
US10914228B2 (en) * 2016-11-15 2021-02-09 Cummins Inc. Waste heat recovery with active coolant pressure control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020112678A1 (en) * 2001-02-20 2002-08-22 Volvo Trucks North America, Inc. Engine cooling system
US8065980B2 (en) * 2007-02-09 2011-11-29 Volvo Lastvagnar Ab Coolant system
US20110308484A1 (en) * 2010-06-16 2011-12-22 Russell Peterson Method and apparatus to regulate coolant pump inlet pressure

Also Published As

Publication number Publication date
US20190383203A1 (en) 2019-12-19
DE102019112500B4 (de) 2024-06-06
CN110608083B (zh) 2021-04-09
CN110608083A (zh) 2019-12-24
DE102019112500A1 (de) 2019-12-19

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